Heatmap
A daily activity field with every date and reading available as text.
Live — this one is real
- 2026-07-01: 0
- 2026-07-02: 7
- 2026-07-03: 3
- 2026-07-04: 10
- 2026-07-05: 6
- 2026-07-06: 2
- 2026-07-07: 9
- 2026-07-08: 5
- 2026-07-09: 1
- 2026-07-10: 8
- 2026-07-11: 4
- 2026-07-12: 0
- 2026-07-13: 7
- 2026-07-14: 3
- 2026-07-15: 10
- 2026-07-16: 6
- 2026-07-17: 2
- 2026-07-18: 9
- 2026-07-19: 5
- 2026-07-20: 1
- 2026-07-21: 8
- 2026-07-22: 4
- 2026-07-23: 0
- 2026-07-24: 7
- 2026-07-25: 3
- 2026-07-26: 10
- 2026-07-27: 6
- 2026-07-28: 2
- 2026-08-01: 9
- 2026-08-02: 5
- 2026-08-03: 1
- 2026-08-04: 8
- 2026-08-05: 4
- 2026-08-06: 0
- 2026-08-07: 7
- 2026-08-08: 3
- 2026-08-09: 10
- 2026-08-10: 6
- 2026-08-11: 2
- 2026-08-12: 9
- 2026-08-13: 5
- 2026-08-14: 1
- 2026-08-15: 8
- 2026-08-16: 4
- 2026-08-17: 0
- 2026-08-18: 7
- 2026-08-19: 3
- 2026-08-20: 10
- 2026-08-21: 6
- 2026-08-22: 2
- 2026-08-23: 9
- 2026-08-24: 5
- 2026-08-25: 1
- 2026-08-26: 8
- 2026-08-27: 4
- 2026-08-28: 0
- 2026-09-01: 7
- 2026-09-02: 3
- 2026-09-03: 10
- 2026-09-04: 6
- 2026-09-05: 2
- 2026-09-06: 9
- 2026-09-07: 5
- 2026-09-08: 1
- 2026-09-09: 8
- 2026-09-10: 4
- 2026-09-11: 0
- 2026-09-12: 7
- 2026-09-13: 3
- 2026-09-14: 10
Each square is one day. Intensity follows the recorded value.
Usage
import { Heatmap } from "mizu-ui";
export function Example() {
const data = Array.from({ length: 70 }, (_, i) => ({
date: `2026-${String(Math.floor(i / 28) + 7).padStart(2, "0")}-${String((i % 28) + 1).padStart(2, "0")}`,
value: (i * 7) % 11,
}));
return <Heatmap label="Illustrative workshop activity" data={data} />;
}
Source & setup
Add this component to your project with the shadcn CLI. The command copies its source into your configured UI directory, with base.css, Mizu’s tokens, and the stylesheets that hold its rules. Each rule lives in one stylesheet, so components you add together never repeat CSS. In a project without a components.json, run npx shadcn@latest init 0xuser64bit/mizu/preset first: plain init installs shadcn’s theme into your global CSS. Then load the fonts.
npx shadcn@latest add 0xuser64bit/mizu/heatmapEvery component imports from its own path, its name in kebab case. Its source, data/Charts.tsx, also holds BarChart and Sparkline. Each has its own command and path; adding one after this copies only its small entry file. To paste the example, replace its mizu-ui import with:
import { Heatmap } from "@/components/ui/mizu/heatmap";For npm imports, import mizu-ui/styles.css once. Fonts are optional via mizu-ui/fonts.css. Override --mizu-* tokens or use className for local styling. Uses native React and CSS; install the package peers for root imports. A Client Component: its source starts with “use client”.
Inspect data/Charts.tsx
Source is included in the npm package under src/data/Charts.tsx.
Props
| Prop | Type | Default | Description |
|---|---|---|---|
| data | {date: string; value: number}[] | — | Days in chronological order; supply missing days as zero. |
| label | string | — | Figure caption. |
Accessibility
Each square includes its date/value as screen-reader text. The full grid scrolls on narrow screens; color is never the only source of data.
Motion
Static CSS grid.